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Pacific Blue

Pacific Blue (Ex-Max 401 nm/Em-Max 452)

Pacific Blue® (Pac Blue, PacBlue) is a blue-emitting organic fluorophore that can be excited by the 405 nm Violet laser and captured with a 450/50 nm bandpass filter. Pacific Blue has an excititaion peak at 401 nm and an emission peak at 452 nm.

Excitation & emission spectra

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Key facts

Excitation maximum
401 nm
Emission maximum
452 nm
Optimal laser line
405
Optimal filter
450/50
Relative brightness
2 of 5
Extinction coefficient
46000
Quantum yield
0.78
Molecular weight
274
Commercial antibodies
1.8k from 18 suppliers

Pacific Blue has an excitation maximum at 401 nm and an emission maximum at 452 nm, a Stokes shift of 51 nm. Its extinction coefficient is 46000 M⁻¹cm⁻¹. It is optimally excited by the 405 laser line.

Frequently asked questions

What is Pacific Blue?
Pacific Blue® (Pac Blue, PacBlue) is a blue-emitting organic fluorophore that can be excited by the 405 nm Violet laser and captured with a 450/50 nm bandpass filter. Pacific Blue has an excititaion peak at 401 nm and an emission peak at 452 nm.
What laser excites Pacific Blue?
Pacific Blue is optimally excited by the 405 laser line. Its excitation maximum is 401 nm.
What filter should I use to detect Pacific Blue?
A 450/50 filter captures the peak of the Pacific Blue emission near 452 nm with minimal spillover.
How bright is Pacific Blue?
Pacific Blue has a relative brightness of 2 out of 5 (quantum yield 0.78).
How many antibodies are available conjugated to Pacific Blue?
FluoroFinder tracks 1842 commercially available Pacific Blue conjugates, searchable by target, clone, host and application.